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Questions  

what is the value of linear velocity of  a particle if its angular velocity is ω=3i4j+k and ins tantaneous positon vector is r=5i6j+6k ?

a
6i+2j-3k
b
-18i-13j+2k
c
4i-13j+6k
d
6i-2i+8k

detailed solution

Correct option is B

We know that v→=ω→×r→∴v→=ijk3−415−66=i(−24+6)+j(5−18)+k(−18+20)=−18i−13j+2k

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